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This help desk is a free resource intended for discussion purposes only. Neither BOMA, its chapters, affiliates, or Extreme Measures Inc.® are responsible for the information, comments or opinions expressed herein. For complete information, refer to the official publications of the standards themselves.

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Measuring to exterior surface

Maritza Garcia
Urban Studio Architects
April 22, 2010

My question is regarding measuring the exterior walls for useable tenant area. The building conditions are as follows:
Exterior walls are predominantly floor to ceiling storefront glass systems however they are divided by non-structural vertical spandrel panels throughout the exterior face.
Would the useable area calc line go through the spandrel panels (as if they were columns) or to the finished face (as if they were walls)?

Thank you for your time,
Maritza Garcia

Adam Fingret
Extreme Measures Inc.
April 26, 2010


BOMA 96 suggests you ignore "columns and projections necessary to the building" only. It sounds as though your panels do not qualify. As such, you should measure to the dominant portion.

If however, the space in question is Store Area and it has Street Frontage, you can measure out to the Building Line.

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